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KI KLEINFELDER <br /> October 19, 1988 <br /> File 24-1119-00 <br /> Mr. Dan Clement <br /> Ci of Stockton Building Department <br /> 6 Mast Lindsay <br /> Stockton, CA 95202 <br /> SUBJECT: Soil Sampling Results <br /> 134 S. Sutter <br /> Stockton, California <br /> Enclosed are the analytical results for the soil samples collected from under the excavated <br /> tanks and sum at 134 S.Sutter Street, Stockton, California (see Plate 1, Site Location <br /> Map). A totalofthree soil samples were collected and submitted for analysis on two <br /> separate sampling events. On October 6, 1988, two soil samples were collected from under <br /> two removed underground storage tanks (one sample below each tank). The third soil <br /> sample was collected on October 11, 1988 from the soil below an abandoned waste oil- <br /> water separator sump. The purpose of the so> samp m was to assess the possible presence <br /> of hydrocarbon contamination in the soils below the removed underground tanks and the <br /> waste oil-water sump. <br /> Sa=line Event 1 Underground Tanks <br /> On October 6, 1988, a Kleinfelder field geologist collected two soil samples from under two <br /> removed 1,000-gallon underground storage tanks. These tanks were uncovered during <br /> excavation associated with construction and the original contents are not known. A <br /> representative of San Joaquin Local Health District (SJLHD), Diane Hinson, was present <br /> while work was performed. The first sample is identified as 10einfelder Sample #18691. <br /> This sample was collected under the west end of the northern tank, (SJLHD) tank #39- <br /> 2338-01. The second sample Sample #18692) was collected from below the southern <br /> tank (SJLHD tank #39-2338-021. The approximate tank and sample locations are shown <br /> on Plate 2, Sample Location Map. <br /> The samples were delivered under chain-of-custody control to Chemwest Analytical <br /> Laboratories, Inc. in Sacramento, California (Chemwest). The samples were analyzed for: <br /> Total Petroleum Hydrocarbons (TPH) extractable by GC-FID; benzene, toluene, <br /> ethylbenzene, and xylene (BTEX) by EPA Method 8020; ethylene dibromide (EDB) <br /> extractable by EPA Method 504; and total organic lead by Department of Health Services <br /> (DHS) approved methodology. <br /> KLEINFELDER 9795 Business Park Drive, Suite C, Sacramento, CA 95827 (916) 366-1701 <br />